Semiconservative dna - Study guides, Class notes & Summaries

Biology Midterm 2 Exam Questions With Verified Answers Which of the following shows the correct base pairing of deoxyribonucleotides that occurs in nature? Select one: a. A with T b. A with U c. A with C d. A with G - answerG pairs with C A pairs with T U is found in RNA, not DNA The correct answer is: A with T According to the "semi-conservative" model of DNA replication, after a double-stranded DNA molecule is replicated Select one: a. each DNA strand of each of the two result...

Frederick Griffith, 1928 didnt discover DNA. He injected mice with R and S (S=virulent). Then. He injected mice with living type R and heat-killed type S bacteria into the mouse. The living type R cells have been transformed inti virulent type S cells! A transforming substance for the S trait was passed feom S to R cells. Avery, MacLeod and McCarty, 1944 They showed that the transforming substance was DNA. -They purified any cells transddormed from R--->S and found that the tr...

DNA replication is semiconservative, which allows each of the 2 strands to serve as a template for the new strands Correct Answer- true Recall that the DNA polymerase must bind a double-stranded polymer before it can start making its own DNA polymer. What helps the DNA polymerase to overcome this problem in DNA replication? Correct Answer- RNA primers Several components of cigarette smoke, including benzopyrene, insert themselves into the DNA and lead to several types of mutations such as...

Chapter 9 review Latest questions 2024/2025 Questions and Answers 100% Solved Which of the following does cytosine pair with? guanine thymine adenine a pyrimidine - a. guanine Prokaryotes contain a ________chromosome, and eukaryotes contain ________ chromosomes. single-stranded circular; single-stranded linear single-stranded linear; single-stranded circular double-stranded circular; double-stranded linear double-stranded linear; double-stranded circular - c. double-strand...

Molecular Genetics 4500 Module 2 Exam Exam With Questions and Answers 100% Solved The complex of proteins that is involved in the replication of DNA is called a ________. - answerreplisome What protein is responsible for the initial step in unwinding the DNA helix during replication of the bacterial chromosome? - answerDnaA Which of the following DNA double helices would be more difficult to separate into single- stranded molecules by treatment with heat (which breaks hydrogen bonds)? I...

Free nucleotides are added at the replication fork of DNA using the enzyme DNA polymerase Which of the following is the DNA at the end of linear chromosomes? telomere In the semiconservative replication of DNA, each of the new double strands of DNA has one original strand and one newly assembled strand Nucleotide excision repair is particularly important when thymine dimers are formed from exposure to UV light The strand that is synthesized continuously in the 5' to 3' direction th...

BIO110 PRACTICE EXAM 4|165 Questions with Verified Answers TRNA has a few loops in its structure, what loops connects to the mRNA codon? a. codon domain b. anticodon c. acodon d. amino acid - CORRECT ANSWER b. anticodon Catabolite activator protein: a. increases the affinity of the promoter region for RNA polymerase b. decreases RNA polymerase activity c. becomes nonfunctional when it binds to AMP d. binds and activates RNA polymerase e. blocks RNA polymerase access to the DNA tem...

Module 2 Exam Practice 113 Questions with Verified Answers What does RNA Pol I transcribe? - CORRECT ANSWER rRNA What does RNA Pol II transcribe? - CORRECT ANSWER mRNA snRNA What does RNA Pol III transcribe? - CORRECT ANSWER tRNA rRNA snRNA What is wrong with this definition of a gene? "A gene consists of DNA sequences that encode a single polypeptide" - CORRECT ANSWER 1. Not all genes are DNA sequences (RNA viruses) 2. Not all RNA molecules encode for a single polypeptide L...

Chapter 9 review Latest questions 2024 | 100% Pass Rated A+ Which of the following does cytosine pair with? a. guanine b. thymine c. adenine d. a pyrimidine - a. guanine Prokaryotes contain a ________chromosome, and eukaryotes contain ________ chromosomes. a. single-stranded circular; single-stranded linear b. single-stranded linear; single-stranded circular c. double-stranded circular; double-stranded linear d. double-stranded linear; double-stranded circular - c. double-stranded cir...

BIOL 301 Exam 1 Study Guide with Complete Solutions Griffith - Ans:-injected mice with bacteria, discovered concept of transformation Sia & Dawson - Ans:-repeated Griffith's experiment in vitro, proved that mice had nothing to do with transformation Avery, MacLeod, and McCarty - Ans:-used DNase, RNase, and protease to determine that DNA is the factor in transformation Hershey and Chase - Ans:-used radioactive isotopes of P and S to determine that DNA is the genetic material Frankel-C...